jsglass
Posts: 3
Joined: 12/14/2008 Status: offline
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As a retired fire dept. chief officer, I will add the following; "Carbon tetrachloride was formerly used in a wide variety of applications before the carcinogenic hazard was well-known. One such use was as a fire extinguishing agent. Besides the carcinogenic hazard this poses, an additional danger is that carbon tetrachloride can form phosgene gas (Cl2CO, used as a chemical weapon in World War I) when used on electrical fires. If you ever come across a carbon tetrachloride extinguisher dispose of it as a toxic waste and replace the extinguisher with an appropriately selected model." Bad stuff, make a wide berth around it. Red Comet extinguishers (same formulation) were commonly encountered out west where I was employed. We made it a point to keep our breathing aparatus in place both inside (duh) and outside an occupancy whenever we worked an incident where we suspected carbon tet to be present.
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